To provide a sound wave sensor which can reduce a dead zone as compared to a conventional one.
A transmitting element for generating a sound wave comprises a sound wave generation element which comprises a base substrate, a heat-producing layer formed on one surface of the base substrate, and a heat insulating layer interposed between the base substrate and the heat-producing layer on the one surface of the base substrate, generating a sound wave accompanied by a temperature change of the heat-producing layer through energization thereto. A transmitting element's side circuit board (a first support substrate) 3 in which the transmitting element 1 is installed and a receiving element's side circuit board (a second support substrate) 4 in which a receiving element 2 for receiving a sound wave reflected off an object Ob is installed are housed in a housing 50. The housing 50 is provided with a first window hole 52a allowing a transmitting face of the transmitting element 1 to be exposed and a second window hole 52b allowing a receiving face of the receiving element 2 to be exposed, which are opening parts allowing the transmitting face of the transmitting element 1 and the receiving face of the receiving element 2 to be exposed.
YAMANAKA HIROSHI
GOTO HIROMICHI
| JP2005020315A | 2005-01-20 | |||
| JPH01127987A | 1989-05-19 | |||
| JPH0597193U | 1993-12-27 | |||
| JP2003520466A | 2003-07-02 | |||
| JPH05100011A | 1993-04-23 | |||
| JPS6234499A | 1987-02-14 | |||
| JPS59115366U | 1984-08-03 |
Atsuo Mori
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